Just wondered how fast does a 747 or a plane of a similar size have to travel to stay up in the air , in other words whats the slowest it can go and still stay up ??
Seems to suggest 178-184mph.Operating Performance:
VR 155-160kts (VR is the rotation speed ie lift-off speed)
Not if they want to fly the aircraft ever again they won't!On landing the pilot will use the flap on the trailing edge to slow the aircraft down
So you don't hold a pilots licence then?RINGREY said:Just worked in the industy for the best part of 15yrs on the most advanced civil aircraft wings in the world!:smthumbup
Directly above -RINGREY said:I didn't say that the flaps primary function is to slow the aircfaft down! You tell me where I stated that!
RINGREY said:On landing the pilot will use the flap on the trailing edge to slow the aircraft down
Now this is correct, however suggesting that a pilot uses flaps to reduce airspeed it not.RINGREY said:The spoilers/air brakes primarily do that, however, as a secondary function they will act to slow down the a/c as a direct result of increased drag.
Which pilot friend? I'm the one with the pilots licence, unlike you! ;-)RINGREY said:I think that you pilot friend will agree 100% with me!!! Now go back to your tyre kicking!
I wondered how long until you spotted this.:lol:
erm i hold a full transport licence.......
a small amount of clarification is required here:
Ground speed, Indicated Airspeed, Rectified Airspeed or True Airspeed?
Which figure would you like......they are all very different
20mph approx.let me give you an example:
wind straight down the runway at 50mph
aircraft stall speed with no flap at ground level 70mph
how fast, relative to the ground, does the aircraft need to travel to get or remain airborne?? in this case and assuming no airspeed errors to assess answers on a postcard please?
Ha ha, no... I have a PPL(H) so flying backwards is rather more common in my machines - even if not well advised!lol lets just assume indicated = True fella.......
but ground speed or airspeed, massive difference, in my case above......
20mph
have u ben ever flown a C152 BACKWARDS over the ground in high wind and full flap? its WIERD!!!!!
It this what helps create pilot induced oscillation - i.e. bouncing down a runway?:lol: im a fixed wing boy
its really most upsetting to the mind to see you moving backwards when really u are flying forwards.......
had touch down speeds of like 10mph before now......vs 60 odd in still conditions.....
ground effect can best be described as a cushion as you flare to land and can catch u right out as a tyro.....
sends you up into the air, and then you kinda stall in almost, massive sink all of a sudden. harsh on the U/C
case of watching how much u flare when u land and its aircraft specific, bigger the wingspan the more pronounced more or less....
PPL, RAF Air Traffic Control officer, 140 hours on Grob tutor and generally aircraft geek lollol steve i only read this a little while ago and spent most of my time discussing ground effect.
you fly or have exp in aviation or lucky guess then?